If you are going to hard wire the power lead this is a must buy if you have more than one aircraft or vehicle. Get another power lead to easily move your spider between vehicles.
If you have more than one aircraft or vehicle and would like to move the spider between vehicles you may need extra brackets. Once in place, the bracket isn't easily removed. Bracket set includes bracket for Keypad and Spider S4.
Permanently mount a keypad in each of your aircraft, and then only move the Spider between aircraft when you need to. A new Spider S4 comes with one Keypad in the box.
If you have more than one aircraft or vehicle and would like to move the spider between vehicles, you may need extra brackets. Once in place the bracket isn't easily removed.
Update the firmware on the S3 or S4 from any location with the reprogramming lead. Simply plug the spider into the computer and download the latest version to get the benefits of new features on your Spider.